The Sun begins today a weekly package of stories and features on personal finance. The features include:

* Jane Bryant Quinn's syndicated column.

* A column on mutual-fund investing written for The Sun by Werner Renberg, an expert on mutual funds and the author of two books on the subject.

* Tables of interest rates being offered on deposit accounts by area banks and savings and loans (a similar table on mortgage rates appears in the Sunday Real Estate section) and a table of loan and deposit rates from area credit unions.