I'm migrating from AMD to Intel (processor) in 6 days. Need tips

POST will look different, but other than that, I can't think of anything I've particularly had change or had to change between AMD and Intel processors. I dig into BIOS settings when I first set up a machine, but those are usually motherboard-dependent things and not so much processor. I've never really bothered overclocking things either.

Can't help you on SSDs -- still haven't owned one yet myself!

Turbo is automatic. As long as you have some thermal leeway (not heating up to a limit), it'll automatically boost.
The stock setting for the BIOS should be enough (sometimes it depends on motherboard manufacturers) unless you're overclocking.
You can overclock non-K processors but the multipliers are locked (hence you need to overclock the BCLK). Not recommended if you don't know what you're doing.

SSDs shouldn't need any software to maintain (it should be automatic). Sometimes it depends on the manufacturer as well (I know Intel SSDs have a firmware layer that does everything it needs). Not sure about Samsung SSDs.

About AFKing. Not sure. Depends on what background process you're running. If it's just Windows, I don't think it'll amount to much writes.

For gaming that supports multiple cores, as well as productivity that supports multiple cores, AMD destroys intel at price/performance. Yes, the more expensive intel i7's are slightly better, but they cost more than double that of AMD 8350, which is probably the best bang for your buck as a CPU.
Overclocking an Intel cpu should be more or less similar to AMD cpu's, i.e if you know how to OC AMD CPU, you will figure out how to OC Intel, as long as your motherboard is decent enough.
For the SSD, disable file indexing (useless, due to SSD being so fast anyway), either remove pagefile completely (not recommended) or create a small 1-2gb one on your HDD (can go higher or lower, depending on the amount of RAM you have and what you plan to do on this system). If possible, disable system restore, but that shouldn't be a huge deal. Disabling hibernation wouldn't do much to longevity of SSD, but it would sure free up the already limited space on it.
About the 24/7 standby thing... As long as it's not writing anything, the life of your SSD isn't being reduced. Not to mention it would take years upon years to use up all the write cycles even if you wrote 10gb every day on it, which you won't, I'm sure. Sudden power loss can kill an SSD however, so if you don't have a UPS, it's probably safer to turn the PC off overnight or if you're not planning to use it for hours. With SSD it will boot up in under 20 seconds anyway, so it shouldn't bother you anyway.

I have to ask, exactly what AMD processor are you going from?

Not bash you? loyal amd user, you say. GOD PRAISE YOU, finally, you realize amd sux, INTEL THE BEST!

PS Why so serious?

they both do their jobs fine for gaming but yeah id still go for Intel too :)

You probably should disable disk defragmentation on ssd if you haven't already. Also you should verify that the TRIM command is enabled. Also, some ssd softwares have a manual trim button, like the OCZ Toolbox (for ocz ssds only). You should run the trim command may once a month or so, depending on usage.

Intel is the way to go for CPU's, if you overclock grab an Hyper 212 heatsink, still the best bang for the buck I think.

Depending on how much RAM you have, you could disable the page file altogether, though if you don't know what you're doing/why you'd do it, leave it.

To answer your questions:

Kinda want to know how does turbo thinggy works, Is it automatic or a bios/power option settings?
Automatic.

what should I know to maximize the processor (Bios hidden settings that I should know)
Let it handle itself unless you want to overclock it.

Overclocking a non-K processor possible?
Yes, but not to the extent of a non-K, as other people have mentioned.

What software I should use to maximize SSD's life.
You don't really have to do anything, it should take care of itself. As people have mentioned, you should disable defragmentation as it's not needed.

Also the cache thinggy for the most used files being stored in SSD.
I'm assuming you mean pagefile. See the first line of this post. I'd recommend you set it to a fixed size, anyway (min and max sizes being the same).

Should I turn off my PC to lessen SSD usage or It's safe to 24/7 standby my PC? (Standby = afk)
You should sleep/hibernate your PC when it's not in use simply to save power. Unless you've got things going on in the background while you're afk (torrents, etc.), your drive should not be doing anything (it does not physically move like a HDD).

brief explanation what is this TRIM thinggy?
Normally when you delete stuff on an SSD, it doesn't actually erase the block, the OS just marks it as usable. When it comes time to using that block again, the SSD trying to write to that block first has to erase it before writing to it. See this link.

To maximize SSD's life you don't need to use anything. Concerns for SSD's life are a thing of the past. Any tricks anyone tell you to use will cost you in terms of performance of your computer, stability, speed, all of which nullifies acquisition of an SSD in the first place.

I moved from AMD 1100T to i7 4770K. In 3D rendering, 4770K is much much more powerful. It simply reduced the rendering time to below half of time that 1100T needs. BTW, no need to buy a haswell cpu with K. Haswell cpu is not good at overclocking and overclocking really makes a little difference in real life use.