I agree with Tigress.
What helps is to first learn what's POSSIBLE, using freebie items, and just seeing what other people have on. Then, when you've learned what's possible, choose something to try to learn, and go to it. There are LOTS of free classes at NCI (New Citizens Inc.) that you can find by Search button --> Events --> Education tab. Every day, lots of topics, from how to edit appearance, to how to make buildings and furniture, to basic clothing texturing. Prim clothing is the next step beyond texture clothing...
There's too much to even think about "figuring it out" in days or even weeks. Two months, and I finally got around to learning how to save and change outfits properly. (The 2 months were spent really learning the ins and outs of prim rezzing / rotating / and positioning, using the scripting language. Just barely scratching the surface of scripting.)
Take you time learning, but in the meantime, have fun with the thousands of freebie items out there.
Hope to meet you in-world