It depends on how you learn ... I'm an all-in, over my head and figure it out type, so my very first knitting project was an all-over cable sweater-jacket!
If you learn at a more human pace :-) the next skills you'll want to get are knitting to gauge and shaping through increases and decreases. Once you have those down, you can knit almost any beginner pattern, and some intermediate ones.
If you learn from books, check out Knitting Without Tears by Elizabeth Zimmermann. It's old, but still in print. She has a video series, EZ's Knitting Workshop, that starts about where you are now. Also very old, but knitting hasn't changed in centuries, so something from the 1980s is still good.
For modern stuff, visit Ravelry.com It's a very heavily trafficked social forum with extras; you can find almost anything knitting related there.
By the way, don't ever assume knitting will save money. Yarn worth knitting with isn't cheap ... the $100 you spend on yarn may make a $1,000 "designer" sweater, but you can buy a perfectly nice sweater for $30 (or less) at the consignment shop. Knit because you love to knit, not to be frugal.