need help

ive installed the newest version onto my web server file manager and have come across this error. can anyone help i am a beginner.

System Check Acceptance
Errors have been detected during compatibility check. In order for your SuiteCRM Installation to function properly, please take the proper steps to address the issues listed below and either press the recheck button, or try installing again.

StatusComponent
MB Strings Module

Functions associated with the Multibyte Strings PHP extension (mbstring) that are needed by the SuiteCRM application were not found.

Generally, the mbstring module is not enabled by default in PHP and must be activated with --enable-mbstring when the PHP binary is built. Please refer to your PHP Manual for more information on how to enable mbstring support.

ZIP Handling Module

ZIP support not found: SuiteCRM needs ZIP support in order to process compressed files.

Location of your PHP configuration file (php.ini):
/usr/local/lib/php.ini