Confused Beginner Web Developer (Questions About Stuff)

I would like to make web portfolio for a friend. I would like him to have a blog on a website. I was thinking not to use wordpress or other any other cms because they are restriced design wise and i would like to have better working knowledge of writing code and designing. But i would like him to have a blog on a site that he could update. He doesnt know code ofcourse. So should i code custom CMS for him? Just for text images and stuff. Is this common practice? What are other practices are for this problem?

I would like to make ecommerce site for my family business. What do you recommend should i code it myself as a begginer. Again i would like to be better at using code. Now i have all rules in my head but i am not confortable to make things with it and that could be excellent exercise. Or should i just use frameworks for ecommerce. I am kinda against that stuff for now and that leads to my third question.

I know that now in a world of web exists a lot of pre written code, frameworks just waiting to put them together in five minutes. But as a begginer dont you think is better to for at least first projects to write most of the code myself. Even if i am doing some of them with tutorials. I would really like to learn code. Not only web languages but aleast one for software(java, c#, c++ and so on). I am not doing this just for the money i am hungry for knowledge and a lot of times this lead me to doing things “the hard and long way” (sounds like title for porno ?).