(Mobile) mechanic for engine compression test(s), etc(santa cruz)

We would like to do a compression test on our engine in order to estimate its future life, in order to make a long-term plan for repairs, if warranted. We would also like to be shown how it's done, so that we could do it ourselves if we felt brave. It's a 1999 Dodge Grand Caravan. This can be done in the O'Reilly's parking lot at Ocean/Water. If the results are not good, we would like you to help compression-test any vehicle we might consider buying to replace the current one, over the next several months. Text/email only! No phone calls!