I'm biased but I think that Ashtanga is the best practice. And the way to learn Ashtanga is to find a teacher who teaches Mysore. Sign up for the month and follow their instruction. If you can't get access to a teacher then a dvd can do it.
To practice Isvara pranidhana is to endeavor to live your life from the perspective that everything under the sun shares a benevolent, invisible, cohesive, inescapable connection with everything else.
'Nothingness merged with nothingness', the zero position, Samastitihi this is where IT happens, where I befriend you, the mind horse, I get control of the reins that direct you and the ungraspable becomes graspable.
That is one of the main reasons for practice—to inspire yourself. It's not only discipline, determination, toughness and stubbornness that gets me on my mat each day…
Pattabhi Jois demanded that his students follow his method with clear and strict accuracy, but he achieved this partly by tolerance, understanding, smiles, hugs and overall benevolence.
One of yoga's GREAT gifts is to show you your limits, To show you that despite thinking you are giving everything you have to give it is not enough.