DiY Crochet tutorial for beginner - Master the basics of crochet. You don't need to know every crochet stitch, but you should know how to tie a slip knot and make a starting chain. You should also know how to single crochet, double crochet, slip stitch, and how to increase and decrease with single and double crochet. It's true there are lots of other stitches and combinations, but there is much you can do with just these basics. If you do learn other stitches you like, you can incorporate them in much the same ways as the standard stitches.
Crochet Pattern Design - Follow a variety of written patterns, but don't just read them off the page and do them; instead, notice as you do them how the stitches fit together and how the mechanics work. These are all elements you can reuse in your own designs. This box is made from five rectangular pieces stitched together. Pay attention to how to produce effects you can reuse, particularly the basic shapes. For example, to result in a rectangular piece of fabric with straight sides, you will need to make a turning chain at the end of each row, and rows of single crochet require chaining one whereas rows of double crochet require chaining three.You'll also want to learn to crochet in the round, both with and without combining rounds. Notice rules and patterns in the pieces you crochet. For example, amigurumi is crocheted in the round, usually with joining rounds. In many cases, it makes it easiest to keep track of how many stitches you have and where to add them if each row contains a multiple of six stitches.
Crocheting tutorials - Decide what you would like to make. A crocheted piece can be utilitarian, decorative, or both. You can make a flat afghan in square rows, a free-form sculpture, or anything in between. Perhaps a particular type or combination of yarn will inspire something. Perhaps a particular need (like keeping somebody warm) will inspire something.
Don't be afraid to sketch what you have in mind or make a small sample piece to test a concept. You may discover that you can make a piece, or you may discover what you'd like to do a bit differently.
Home made Crochet - If you want to be able to share the pattern you create with friends, post it online, or simply get a second sock or mitten to match the first, you'll need to take notes. They can be as simple or as detailed as you prefer, provided that you can make sense of them when you're done and, if need be, translate between your own shorthand and something another crocheter can read.