Good books/courses

Hola! I started studying spanish in high school 3 years ago but after this time I can't really use this language. My grammar is terrible, I can't communicate. So I wanted to ask you guys if you know any good books/online courses that can help me improve my Spanish? I really enjoyed a polish book written by Beata Pawlikowska where she teaches sentences. She starts with words, then make the sentences more complex which is cool because I learn usefull things. But it doesn't have many sentences in past tenses so my Spanish after 3 years is still on A1/A2 which drives me crazy. Can any of you help me?