Welcome back.
As you can tell, there are a lot of really complicated new systems. Which are, as peripherally mentioned above, optional.
You can play "at standard levels" by doing the following. This is not optimal advice but it's good enough, and it's simple to do while you're getting the hang of everything ELSE that's new.
Every once in a while, go to Wentworth's and sell everything in your Recipes and Salvage for 1 inf each. If it doesn't sell in five seconds, take it down and sell it to a vendor or store. You will get the highest current bid, which might be a lot lower than what you COULD get. Here's why it doesn't matter:
Buying a full set of level 25 single-origin enhancements costs about a million inf.
Selling a single "midlevel" rare salvage gets you about a million inf. (they start dropping around level 20.)
So chances are good that you'll always have as much inf as you need.
If not, you can always ask seebs for money.
If you decide you do want to IO up, there is [as you may have noticed] a lot of help available. If you decide you want to make a lot of inf, the market forum is glad to help you learn how. [It's easy.]
Mini-guides: Force Field Defenders, Blasters, Market Self-Defense, Frankenslotting.
So you think you're a hero, huh.
@Boltcutter in game.
There are groups of IO's called "sets" (you might see them under their power classifications in the Wentworth menus).
The set contains IO's with individual enhancements, and each one in the set is different from the other.... i.e., IO's A, B, C & D all belong to the set "Z".
You can slot multiple IOs from the same set (Z) in a power, but you cannot repeat the same individual IO's... so you can slot A + B + C + D (and you will get a bonus for that power), but not A + A + B + B.
You CAN, however, put the same set into another power, up to a limit of 5 times for your entire build.
There are a few unique set IO's that you can only slot once in your entire build. Be sure to read the descriptions on the recipes, and again, the P-wiki has much more detailed info.
Also, Mid's Hero Designer is a fantastic build tool, and will give you a good idea on how the IO's, sets, and Hami/Hydra enhancements work.
.
What you are stands over you the while, and thunders so that I cannot hear what you say to the contrary. - R.W. Emerson
YUMMY Low-Hanging Fruit for BASE LUV