The word pneumatika, lit. "spirituals," i.e. matters of or from the Holy Spirit, gives the key to Chapters 12, 13, 14. Chapter 12. concerns the Spirit in relation to the body of Christ. This relation is twofold:
(1) The baptism with the Spirit forms the body by uniting believers to Christ the risen and glorified Head, and to each other ( 1 Corinthians 12:12 ; 1 Corinthians 12:13 ). The symbol of the body thus formed is the natural, human body ( 1 Corinthians 12:12 ), and all the analogies are freely used ( 1 Corinthians 12:14-26 ).
(2) To each believer is given a spiritual enablement and capacity for specific service. No believer is destitute of such gift ( 1 Corinthians 12:7 ; 1 Corinthians 12:11 ; 1 Corinthians 12:27 ), but in their distribution the Spirit acts in free sovereignty ( 1 Corinthians 12:11 ). There is no room for self-choosing, and Christian service is simply the ministry of such gift as the individual may have received (cf) Romans 12:4-8 . The gifts are diverse ( 1 Corinthians 12:6 ; 1 Corinthians 12:8-10 ; 1 Corinthians 12:28-30 ), but all are equally honourable because bestowed by the same Spirit, administered under the same Lord, and energized by the same God.
The presence of the phrase peri de ("Now concerning" or "Now about") plus the change in subject mark another matter about which the Corinthians had written Paul with a question (cf. 1 Corinthians 7:1; 1 Corinthians 8:1). It had to do with the gifts (abilities) the Holy Spirit gives those believers He indwells.  This subject is the focus of all that Paul wrote in chapters12-14 , including the famous thirteenth chapter on love. [source][source][source]
As in 1 Corinthians 10:1, Paul implied that what followed was instruction his readers needed. "Spiritual gifts" is literally "the spirituals" (Gr. ton pneumatikon). Paul used pneumatika when he wanted to emphasize the Spirit, and he used charismata when he wanted to stress the gift. Pneumatikon is a broader term than the gifts themselves, though it includes them. It appears to refer primarily to the people who are spiritual (cf. 1 Corinthians 2:15; 1 Corinthians 3:1). Evidently the Corinthians" question dealt with the marks of a spiritual Christian. A spiritual Christian is a believer under the control of the Holy Spirit compared with one under the control of his or her flesh ( Galatians 5:16) or a demonic spirit ( 1 Corinthians 10:20-21). In 1 Corinthians 2:15 Paul described mature Christians as "spiritual" (Gr. pneumatikos, having the Spirit) in contrast to "natural" (i.e, unsaved, not having the Spirit). However, he proceeded immediately to clarify that it is not only possession of the Spirit but also control by the Spirit that marks one as truly spiritual ( 1 Corinthians 3:3). [source][source][source]
1 Corinthians 12:1-11 - Differing Spiritual Gifts
Each believer, being an heir of God, has the same amount of grace placed to his credit in the heavenly bank, on which he can draw in time of need. This is the parable of the pounds. Each servant received the same amount. But there are great diversities in the gifts with which we are endowed. Some have five talents, others two, and large numbers only one. A full enumeration of these gifts is made in 1 Corinthians 12:8-11, and it is a comfort to learn that to everyone something is allotted, 1 Corinthians 12:7; 1 Corinthians 12:11.
Notice that the allotment is made by the Holy Spirit acting sovereignly as He will, 1 Corinthians 12:11. We are not informed when it is made-perhaps it is at the moment of our regeneration or adoption-but it is important to bear in mind that our gifts will probably correspond with our natural endowment. Hence our Lord tells us that to every man was given according to his several ability, Matthew 25:15.
Mark the allusion to the Divine Trinity: the same Spirit, 1 Corinthians 12:4; the same Lord, 1 Corinthians 12:5; the same God, 1 Corinthians 12:6. The Spirit directs, the Savior is the channel of supply, and the Father is the fountain of all. [source]
Chapter Summary: 1 Corinthians 12
1Spiritual gifts, 4are diverse, 7yet to profit all 8And to that end are diversely bestowed; 12as the members of a natural body tend all to the mutual decency, 22service, 26and helpfulness of the same body; 27so we should do for one another, to make up the body of Christ
What do the individual words in 1 Corinthians 12:1 mean?
Concerningnow-spiritual [gifts]brothersnotI do wantyouto be ignorant