- Sales and Marketing go together, but the paths diverge once you know the importance of each function. It is good to get a broad idea of both. You can do some courses on coursera/MooCs, and try to get hands-on with running some marketing campaigns. - "The Challenger Sale" is a fairly easy and good book to read in general. - Have a look at SaaStr channel, there are some nuggets there https://www.youtube.com/c/Saastr/videos

All the best. Try out a lot with short feedback loops so that you can course correct suitably. Always respect the customer and their needs.