By uploading package file
Step1: Access to the management of the Joomla (Administrator) and go to menu Extensions → Manage → Install
Step2: In the "Upload Package File" tab, browse for Solidres package have downloaded to install.
Step3: If successful installation will appear the message.
After installation is complete you can use this Solidres at any time by accessing the Components → Solidres.
By installing from the folder
Step1: After downloading the file, make sure you extract it first.
Step2: Upload the extracted folder to your Joomla /tmp directory using your FTP client.
Step3: Go to Extensions → Manage → Install. In the Install section, click the Install from Folder tab.
Step4: At the "Install from Folder" field, type at the end of the path the name of the new folder that you have uploaded. Then click on Check and Install button.