Nope nothing you should avoid. Try everything. Just some fibers are easier to spin than others. If you liked spinning the wool, then you could remember what kind it was. Order more later.
Get a little bit of everythign when you feel ready. Just to play with and it is soooo much fun.
Merino wool wasn't easy for me to spin. I'm just now getting it after ordering 2lbs!! I thought it would be easy, thought wrong.
Corriedale is my favorite next to merino. It's much easier to spin. Very soft.
Don't get frustrated if you find something you can't spin. Try it. Put it away and come back to it. Put it away again.
Don't buy a lot unless you like how you spun it.
Wools are great. Cheap and if you hate your singles then knit them and felt it!
Spinning color is fun. I never know what I'll get.
Try sampler packs. Woodland Works has a few.
All wools are *not* equal. They are very different from one another.
Merino is fine and short, very soft. Corriedale has a longer staple very soft, begs to be spun. Targhee is sproingy. Lots of krimp. Took some getting used to for me.
Find other spinners in person. You learn a lot just by watching.
Handspun does very well in hats, scarves, and bags.
Don't get frustrated. Don't give up. Have fun.
Post lots of pics ;-) Love seeing them!
My unsolicited, but overabundant two cents worth.