Welcome Carmen and don't be afraid that you don't understand things, no one of us did in the beginning. The simple thing is to find friends and follow them. And wen people find you they will follow you. If you want to find Tsufrends that are on Steemit, look at this post that Kalemandra take cares of and update every time new people come along.

https://steemit.com/tsufamily/@kalemandra/ex-tsuvians-refreshed-list-we-are-already-40-with-me

Then it's just like everywhere els, post your photos and thoughts and interact whit others. The Home button will show you everything that the people you are following are posting and sharing.