If you want to do your computer business then this will be an evergreen business model.

You can open a computer shop at your own capacity, such as a small shop or a multi-branded store.

In a small shop, you can attract the attention of the customer by placing a couple of models of computers, desktops, laptops.

For a multi-branded store, you need to have multiple brands of computers, notebooks, desktops, personal computers, tablets

To do business legally, first you have to get a license.

To get a license, get your business registered and get a trade license

In whichever name you are starting your business, keep the electricity connection in that name and file ITR with that name.

If your goods come from any other country, then you will have to take ITC i.e. Import Export Code for that.