Which math books should I get?

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Hello /sci/, I've recently started getting interested in math again and would like to properly study the "basics" from ground up, since I have rather big gaps in knowledge. I've picked some books which seemed like they could be for what I'm searching for and would appreciate if someone could tell me if and in which order I should read/work through them:
- Basic Mathematics (Serge Lang)
- Mathematics: Its Content, Methods and Meaning (Aleksandrov)
- World of Mathematics (Newman)
- Book of Proof (Hammack)
- How to Prove It (Velleman)