I do the same as Sue - use the My List feature here. I track the plant, when I got it, where from, when it emerges, when it blooms, when I cut it back, if it gets fall color, when/how it died, and other random info. If you poke around looking at various folks' use of My List, you may get some good ideas. I'm not big on spreadsheets and find all I need to track is easy enough here. I especially like that one can categorize things multiple ways, and can pull up plants in any given category to work on. The added bonus is when I am working on my plant inventory, I have immediate access to the database here to check for tips/tricks, read comments, etc.
To look at other member's lists, open Tools & Apps, then Plant Lists. Choose someone you know, or someone in your general zone, or just randomly look at lists. I don't utilize the "want" feature, I only track plants I actually have, or ones I have killed. When a plant dies I try to make note if it would be worth trying again or not. Some are just too persnickety, others may have had just tough luck (e.g, the neighbor pup tore it up)