Look for video lessons on YouTube or look for apps

Many great musical instructors have put introductory lessons – and, in some cases, pretty advanced lessons, too – on YouTube in an effort to earn money from the videos themselves, enhance their reputations as music teachers and perhaps attract new students. So, YouTube can be a veritable treasure trove of music teachers and music lessons for all levels. (As mentioned previously, if you choose a widely used instrument, your selection of YouTube music lessons will be much larger.)
 
This is a great opportunity to watch a lot of videos and figure out which ones really click with you. Different people tend to learn things better from different styles. For example, some learn well from rote memorization, while others learn better from experimentation. Try different YouTube teachers for your instrument and see what clicks for you.
(Resources from the web)