I'm taking art courses currently and been in school. Several recommendations: start with basics and then move on to more complex tasks such as drawing people or complete pictures in color. The basics are dull, you have to be ready for a challenge and you would probably loathe drawing cubes in perspective. However, that's okay and helps you build the absolutely necessary foundation for your future hobby or a career. Regarding resources, I recommend Sycra, Sinix Design, Marc Brunet and Proko on YouTube. Also Gottfried Bammes and Jenő Barcsay's anatomy books. Try looking for resources yourself, but be aware that there are tons of scammers who promise you'll be able to draw "within a week" or something, and that's total bullshit. What you need is a mentor who teaches perspective, form, value, space, color theory, lighting, composition, et cetera. Good luck.