You can go through the steps mentioned at link - cashoverflow.in/start-blog

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Buy domain name from NameCheap or any domain provider.

Avoid GoDaddy as I heard horrible stories about their service.

Day 1

• Buy domain and hosting (How to save money on high quality hosting plan)
• Configure your blog and hosting
• Install WordPress theme
• Install essential plugins

Checklist

• Do you have brandable domain
• Did you install SSL