I do not have any experience with it, but I too would be concerned; I see several warning signs without having to dig very deep.
JustFaith’s founder, Jack Jezreel, is/has been a speaker for Call to Action. Call to Action has the ordination of women its agenda. The Bishop of Lincon excommunicated those in his care who are members of that group. That sends up big red flags to me.
Social action is good… but they do not seem to have a focus on gaining eternal salvation.
I really do not get it. $300 for the first year (per group) for the videos, $300 per person per year. (They take donations in addition to that too.)
Their mission statement:
JustFaith Ministries aspires to enable people of faith to develop a passion for justice, to express this passion in concrete acts of social ministry, and to expand the work of social ministry in their faith communities. JustFaith Ministries creates and supports faith formation processes and resources that emphasize the Gospel message of peace and justice, Church social teaching and the intersection of spirituality and action.
What do they do? Teach you how to volunteer? They do not seem to do catechises (they are there to support you in that). You do not need to be spending that kind of money to learn the Gospel message of peace.
I am probably not being very coherent, but I really do not see that group as being particularly Catholic. (They themselves claim Protestant groups have been satisfied using their programme.)
I would suggest the Catechism of the Catholic Church, particularly from part three, ‘Life in Christ’ (chapter two especially). And wha’da know? You can get it online for free.