Not knowing what to expect is one of the most common reasons people hesitate. So here is what I can tell you.
Every experience begins with the understanding that you are an individual, with your own feelings, boundaries, experiences and relationship with your body. We start with conversation, not with any assumption.
Different experiences have different clothing and touch arrangements. In Spiritual Tantra you can remain clothed or wear a sarong, and touch is optional. In Neo Tantra Massage the arrangements are discussed and agreed explicitly beforehand. Online experiences take place from your own home.
Oils, essential oils or aromatherapy may be used across different experiences, not only massage. Please tell me about any allergies or sensitivities in advance so I can adapt what I use.
Consent is ongoing. You can ask questions, change your mind or withdraw consent at any point. Accepting touch is never compulsory.
Meditation and conscious breathing run through everything. There is no particular response you are expected to have. Some people feel deep quietness, some notice sensation or emotion, some simply enjoy being present without demands.
Afterwards, if you can, leave yourself some time. Rather than rushing back to errands or responsibilities, allow space to rest, reflect or simply be. You do not need to decide straight away what any of it meant.