What's the difference between the tickets?

There are two types of tickets. The General Admission ticket grants access to all the events no matter which talk you are interested in. Additionally, you can claim a food ticket to spend at the Cafe. The other tickets only grant access to the specific talk you choose.

Will I be able to visit the museum with this pass?

The tickets only grant access to the Seminar Room of the museum, therefore you should purchase another ticket if you are planning to visit the museum.