Every network is unique and there is little, if any, cross capability. The sensors for the key fob's are sometimes hard to identify, you just press the fob against various parts of the charge station until something happens.
Plugshare is great, but the information is not always accurate. Since it is community based, correct the information when it needs it. Read the comments for the charge stations when planning your routes, that can help you identify ones that area actually working and available. Post a comment when you visit a charge station, even if you don't charge there.
Equip yourself with the cards that work for the charge stations in your area. Expect to pay ~$5 for each network you sign up with. Some require a small deposit and subtract your usage from that, allowing you to replenish your account as needed. I have 5 different network cards/fobs but primary use only two, Chargepoint and the one which is specific to the LA Metro stations. I have occasionally used the others, but they are there mostly to give me options.
Some networks allow you to use a smartphone app instead of a key fob which saves you the $5 start up cost. Telephone numbers are starting to appear on more charge stations allowing you to pay by phone with a credit card and not have an account. This is still the exception rather than the rule.
Visit the charge stations that might be useful to you and see if they are working, even if you don't need to charge that day. They are not always in an obvious location. Have a backup plan, the station you are expecting to use might be occupied or broken. Once you find a reliable location, travel becomes less stressful and you can explore new charging locations, knowing you have a reliable backup location.
Many locations are free with no network, some are free but networked so you need the key fob to unlock the cord or start the charging session. If its free to use, it is more likely to be occupied.
