Hello, it is difficult to start with, but keep going!  When I start a new tense, i frequently click on the "blue name" of the tense in the introductory paragraph of each lesson, this reminds me of when and how the tense is used.  I probably have to do this 100 times before it sinks in.
To practice conjugation alone (without the context mentioned above) I use conjugato, an app on my phone, that drills you in the verbs.
Good luck

My ‘bible’ is 501 Spanish Verbs by Christopher Kendris.