How can I hide log entries information in my form

Here are three useful formuals

Parsing Append Only Fields

so... if you have a text field set to Log Changes where the new entries act in the default manner which is to be at the bottom of the updates, here are some formuals to use to parse out the values from the most recent entry.  I am also assuming that you are logging the date and not the date and time.

Most recent value (formula text field type)

Trim(Right([my update field],"]"))

Date of most recent update (this needs to be a formula date field)

ToDate(Left(Right([my update field],"["),9))

Who did the most recent update (formula text field type)

Trim(NotLeft(Left(Right([my update field],"["),"]"),9))