My experience with seminars property or shares is that the information is available in books and or discussion forums,however the speaker has taken the trouble to collate them and present them in a usable fashion saving time and effort
The most important thing is that the concepts used genuinely work unfortunately many do not present a usable system,
Before spending hundreds on courses read
David Dremans Contrarian Investing the next generation and
Trade your way to financial freedom by Van.K.Tharp
After this you will at least know how to check the systems validity and profitability