What are the different types of reports available in Salesforce

The different types of reports in Salesforce are:
Tabular report that displays the grand total in table form.
Matrix report where grouping is based upon both rows and columns.
Summary reports that are detailed reports in which the grouping is based on columns.
Joined report which allows two or more reports to be joined in a single report

Hello,

Based on the presentation following styles can be used to generate report in salesforce.

Tabular Report : The basic form of presentation of user data is tabular report. It has simple listing of data without any subtotals. One can use this report if the presentation is simple.

Summary Report : Summary report is little bit advanced report as compare to tabular report having grouping of information with subtotals.

Matrix Report : Matrix report has groups of data based on columns and rows. This report can be used to represent comparison between related total with total by row and total by column.

Join Report : Join report has the more advanced way to represent data. This report will allow you to relate different blocks and show them in single report. Each block has unique attributes like name, filters, columns, data, and summary fields.

Thanks.