Filters are used to segregate and organize the data on pre-defined conditions to display only relevant information to use them for data visualization. In Tableau, there are 6 different types of filters in use and they are:
Table filters, Measure Filters, Data Source Filters, Extract filters, Context Filters, and Dimension Filters.
Want to become a master in using the Tableau, then I would recommend you to take up the Tableau course from Intellipaat which is 30hrs. long online training that also includes 7 guided industry projects to help you in practicing to become proficient in using Tableau.
Do check out our intro. video on Tableau training to help you get started.