BOOTS
It really is all personal preference. all skates skate differently. but with that said, I have been skating for 9 years now on and off and have skated pretty much every brand at least once. and i have ALWAYS come back to a razors skate.
I highly suggest an SL skate (aragon 2 or 3) or any gen skate. Gen skates have not changed since before i started skating a dacade+ ago. theres a reason they havnt changed and why people still buy the same boot mold in a different color. they skate amazingly.
Also, size down. dont go and buy any skate over size 10. you will have boat feet and look goofy/have much less control of the skate. Im a 10.5 - 11 nike shoe. and i have a size 8-9 shell SL skate with a 10 liner in it. If you order from aggressive mall (also highly suggest, Justin is a great guy and does a lot for the skate community) just call them up and ask for a 10 liner in a 8-9 shell.
FRAMES
also personal preference. However I find that kids with anti rocket setups are most progressive and have the best style. Frames come in three types.
Flat: four wheels on each skate, faster but much less room to grind on. If you are used to 171cm skis to grind on, dont go to a flat frame skate. you will have an inch of grind plate under your foot.
Anti-Rocker: still four wheels on each skate, but the two inner wheels are small plastic doo-hickeys. they dont roll when you skate, but if you jump on a rail they will roll the rail into your grind plate. I HIGHLY SUGGEST THESE OVER FLAT/FREESTYLE.
Freestyle: Only two wheels on each skate. IMO too much grind space. this causes sloppy grinds and makes it harder to stay locked on. They are fun when you have a huge ledge or something, but other than that, fuck freestyle frames, n00bs use them.
LINERS/WHEELS
You shouldn't have to go this in depth with your skate unless you plan to really skate a lot or get into it. If you have extra cash to put into blades, get some jug liners. jug liners are like pillow liners. Your feet will thank you in the long run.
As for wheels, there are two numbers to describe wheels, one is the size of the wheel (i suggest a 56-58mm wheel.) and the other is a higher number with an "a." after it. This number reffers to the softness of the wheel. Softer wheels (lower numbers) are grippier and smooth, but much slower. If you want wheels to last forever and out perform any other on the market, go with eulogy. They own the wheel industry as far as im concerned.
If anyone has any specific questions/recommendations just shoot me a PM.