Yes possible. What you have in mind? Can build publishing platform, or compile entire comic and sell / distribute for free as start. Later put drm content protection or somethinf. Or build name first.

You can look up Webcomics.com which teaches on the business, design etc. side of webcomics, as well as recommending apps to make one.

As for tablets & apps, most would could go for the iPad Pro & Procreate combo, though Samsung is slowly gaining ground with their current Tab S series. Check out Brad Colbow's reviews on tablets and apps for recommendations.

Webcomickers swear by Comicpress & Comic Easel for publishing webcomics. Beyond that, current hot thing now is Tapas & Webtoons.

To improve your art, there's always Proko & Watts Atelier.

Just remember this one thing: OWN YOUR RIGHTS. As a creator, be wary of third-party publishers or middlemen before signing up. Especially someplace as legit as Webtoons, where terms can change.