I am a relative novice to this whole business of tying flies for trout. I have fiddled around with it for twelve or fifteen years but mostly concentrated on bream flies. Only in the last few have I attempted to tie flies that I had any confidence I would catch a trout with. The whole subject of glass or plastic beads is challenging to me. I have used a few larger black glass beads for nymph heads and some small clear (diamond it say son the pack for color) for some soft hackles but am somewhat lost at what to buy and where to find them. Walmart has beaucoup beads but are they the right size?

Please educated me. Thank you.