Technology has facilitate our life, but from my own journey in learning the German language I recommend the classical way to learn which is with books ,therefore I’ll recommend for you ones you need to start with the Top 5 books list :

1-Menschen:

Menschen is an action-basic level textbook for adults and young adults, designed according to the latest findings in learning psychology and neurodidactics. I highly recommend it for beginners A1

2-Spektrum:

Is the Suitable textbook for motivated adult learners who want to quickly achieve noticeable success in learning the German language.  Moreover its abundance of text and exercise offers the linguistic and intellectual requirements of adult learners.

3-Aspekt neu:

This One is aimed at learners who want to deepen their knowledge of German from level B1 to C1

4-Sicher:

 Sicher Übungsgrammatik B1-C1 Grammar German grammar explanations and exercises

5-Einfach sprechen:

Practices varied lively oral communication the textbook trains according to context or as preparation for oral exams.