Self study is defined (by the State Bar of Texas as acceptable for self-study for attorneys) as:
[R]eading materials specifically prepared for an accredited CLE activity, reading legal articles, digests, advance sheets, cases, treatises, statutes and regulations. You will also be able to claim self-study credit for attending non-accredited legal education activities and non-legal professional education activities that are relevant to specific areas of law or to the legal practice. How these activities are attended (via a live program or by listening to or watching a prerecorded presentation) will be up to each individual [attorney].
Source of definition: HERE