Advise against using reserved words for any object name (such as Names, Name, Number...). See http://allenbrowne.com/AppIssueBadWord.html
Also advise against storing files in an Access db
The papers “PDF format file” will be saved in the TblTalks, Location Field.
Only store the file path in a table and use code to open said file.
Don't combine first and last names (tblNames)
Consider whether or not there can be 2 or more presenters/locations/whatever associated with the entity (talk). If so, then yes, separate them if it doesn't cause any grief (normalize until it hurts, they say). Another reason to separate would be to create a lookup table (no, not a lookup field in a table) so as to somewhat control what can be entered for key attributes. You present a combo list and make the user select from that so you don't end up with Emery vs Emory.
Pretty sure there are library type schemas here http://www.databaseanswers.org/data_models/ if you want to compare.
The more we hear silence, the more we begin to think about our value in this universe.
Paraphrase of Professor Brian Cox.