Yong Chen is one of my favorite watercolor art teachers on YouTube. I've learned a lot by simply watching his process videos, both in their short form on his public YouTube page, and in their long form available for patrons on his website. By the way, he works with some of the safest watercolor paints because he uses his fingers to control brush moisture when blending and lifting, rather than using a sponge or towel.
Chen is a master at suggestion and using watercolor's strengths to that end. He also uses quite large brushes for most of his work, something I've seen fellow art students quail at. Watching his videos and following his techniques will rid you of that fear.
Ava Jarvis is an ink and watercolor artist with a portfolio site at avajarvisart.com. If you found this post useful, consider a one-time tip or supporting Ava on Patreon.