How can I practice Web development as a beginner? [closed]

I'm new to Stack Overflow and programming in general (3 months.) I'm learning Html,css and some javascript. And I have done online courses, but I don't know how or what to practice effectively what I've learnt.

1. What are the particular projects I should work on?
2. Is it advisable to go into bootstrap when I haven't even built with traditional html and css?