HI, StickyfingahZ

According to Washington Law it really doesn't take much to be a caregiver.

RCW 69.51A.010 Definitions.
(2) ??Primary caregiver? means a person who:
(a) Is eighteen years of age or older;
(b) Is responsible for the housing, health, or care of the
patient;
(c) Has been designated in writing by a patient to
perform the duties of primary caregiver under this
chapter.
RCW 69.51A.040 Qualifying patients?? affirmative defense.
(4) The designated primary caregiver shall:
(a) Meet all criteria for status as a primary caregiver to a
qualifying patient;
(b) Possess, in combination with and as an agent for the
qualifying patient, no more marijuana than is necessary
for the patient??s personal, medical use, not exceeding the
amount necessary for a sixty-day supply;
(c) Present a copy of the qualifying patient??s valid
documentation required by this chapter, as well as
evidence of designation to act as primary caregiver by
the patient, to any law enforcement official requesting
such information;
(d) Be prohibited from consuming marijuana obtained
for the personal, medical use of the patient for whom the
individual is acting as primary caregiver; and
(e) Be the primary caregiver to only one patient at any
one time.[1999 c 2 ? 5 (Initiative Measure No. 692,
approved November 3, 1998).]

Also It is illegal to sell medical marijuana here, but I believe some
caregivers accept donations to offset their costs

I hope this was the information you wanted, and it is of some help to you.
The 12 legal States are all different.
Active State Medical Marijuana Programs - NORML