To learn more than the basics, it helps to learn from a trained instructor. Traditional training is very slow and regimented. You learn techniques in a controlled manner, and you're only allowed to advance if your teacher believes you are ready. Attend lessons regularly and practice your tech...
Simple. Become a master in hand-to-hand combat and kenjutsu/Iaido and others will come to learn. Make yourself noticeable, but don't go asking for students. The most interested ones will seek you out and be more loyal anyway. Have patience and focus on mastering yourself and others will...