Baby food stages

I am a ftm so I don't know when to move up food stages and I rather have other moms advice than Google. My son is 6 months (7 in 2 weeks), eats stage 2 purees, and has 3 teeth when do I start giving him chunkier purees or small pieces of food? Also is natural juice straight from the fruits better than store juice? I have not given him any type of juice but I would like to know what is better or if I should just wait till he is older to give any type of juice. All advice will help. :)