change color in adobe illustrator

[Christopher35086496ed0a]

have a logo that was a drawing that is black and white, currently a png file.  i would like to change the lines (in black) to yellow.  it's just an outline of an animal and wording in calligraply.  i also need to make the lines thicker.  any help to complete both of these?

[Monika Gause]

Use the Image Trace panel to trace it. Turn on "Ignore white" when doing so.

The text I would identify the typeface and then create the text object

In order to make the line thicker: Expand the trace and then use offset path.