Hello
I just wanted to say in the most nonmissionary like way that Lecturio is a really really good video lecture service. It won't replace your text book, however, it is a great supplement. let me explain why:
So I started med school in Argentina about 7 years ago while speaking very little Spanish. In addition to the difficulty of speaking very little Spanish my anatomy teacher was less than competent (the type of person who is a world-renowned anatomist but can't teach to save his life). All this equated to me having a poor anatomy basis (although I passed the anatomy course with a 95% percent grade, god knows how).
I didn't feel this lack of anatomy until I started my surgery and traumatology rotations, there I felt it a lot. Thankfully at that time, I was introduced to Lecturio. So using this video lecture service I was able to relearn the essential information that I needed to survive these two subjects and I ended up doing ok with them (which is amazing because I was convinced I was going to fail). Now, a note about this, notice that I said "the essential information", which is exactly that. Lecturio did not teach me in depth anatomy but rather gave me the most important information and the foundation to improve upon, and I am very happy with it.
Unfortunately for me, I was introduced to it late in the game so I was able to use it on some rotations which was a godsend, however, didn't get to use it to supplement the basic sciences (although I would have loved to have done that). So now I am using it to review basic science topics that were never fully understood and it works great.
So, is this going to replace your not so great professor and replace all text books forever? a definite resounding NO. this is going to give you the most essential information for your class and the USMLE test you are taking. Using these lectures along with my lecture notes gave me the introduction necessary along with the most important and fundamental information. This made the later reading of the book a much more pleasant and short. So for me, it saved me time and helped me understand better.
So will this resolve all your medical school or premedical school problems forever? No, you have to put in the work after seeing this video to consolidate the information, it's just that with these it is much easier.
Finally, to answer your question, they have videos from MCAT to STEP 1 and 2. I have not seen them all but the ones I have seen were always clear and concise (what seemed to always be missing from my lecture professors).
So here you have it, my honest input. Is this better than other video lecture services? I have no clue, this is the only one I use. Did this help me tremendously and do I think that they have great and concise lectures? Absolutely. So to wrap this up, try them out and see how it works for you.
Best of luck buddy